Kevin Lubick | 2541edf | 2018-01-11 10:27:14 -0500 | [diff] [blame] | 1 | /* |
Kevin Lubick | db1e5c6 | 2018-02-27 08:30:43 -0500 | [diff] [blame^] | 2 | * Copyright 2018 Google, LLC |
Kevin Lubick | 2541edf | 2018-01-11 10:27:14 -0500 | [diff] [blame] | 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "Fuzz.h" |
| 9 | #include "SkPath.h" |
| 10 | #include "SkRegion.h" |
| 11 | |
| 12 | // We don't always want to test NaNs and infinities. |
| 13 | static void fuzz_nice_float(Fuzz* fuzz, float* f) { |
| 14 | float v; |
| 15 | fuzz->next(&v); |
| 16 | constexpr float kLimit = 1.0e35f; // FLT_MAX? |
| 17 | *f = (v == v && v <= kLimit && v >= -kLimit) ? v : 0.0f; |
| 18 | } |
| 19 | |
| 20 | template <typename... Args> |
| 21 | inline void fuzz_nice_float(Fuzz* fuzz, float* f, Args... rest) { |
| 22 | fuzz_nice_float(fuzz, f); |
| 23 | fuzz_nice_float(fuzz, rest...); |
| 24 | } |
| 25 | |
| 26 | static void fuzz_path(Fuzz* fuzz, SkPath* path, int maxOps) { |
| 27 | if (maxOps < 2) { |
| 28 | maxOps = 2; |
| 29 | } |
| 30 | uint8_t fillType; |
| 31 | fuzz->nextRange(&fillType, 0, (uint8_t)SkPath::kInverseEvenOdd_FillType); |
| 32 | path->setFillType((SkPath::FillType)fillType); |
| 33 | uint8_t numOps; |
| 34 | fuzz->nextRange(&numOps, 2, maxOps); |
| 35 | for (uint8_t i = 0; i < numOps; ++i) { |
| 36 | uint8_t op; |
| 37 | fuzz->nextRange(&op, 0, 6); |
| 38 | SkScalar a, b, c, d, e, f; |
| 39 | switch (op) { |
| 40 | case 0: |
| 41 | fuzz_nice_float(fuzz, &a, &b); |
| 42 | path->moveTo(a, b); |
| 43 | break; |
| 44 | case 1: |
| 45 | fuzz_nice_float(fuzz, &a, &b); |
| 46 | path->lineTo(a, b); |
| 47 | break; |
| 48 | case 2: |
| 49 | fuzz_nice_float(fuzz, &a, &b, &c, &d); |
| 50 | path->quadTo(a, b, c, d); |
| 51 | break; |
| 52 | case 3: |
| 53 | fuzz_nice_float(fuzz, &a, &b, &c, &d, &e); |
| 54 | path->conicTo(a, b, c, d, e); |
| 55 | break; |
| 56 | case 4: |
| 57 | fuzz_nice_float(fuzz, &a, &b, &c, &d, &e, &f); |
| 58 | path->cubicTo(a, b, c, d, e, f); |
| 59 | break; |
| 60 | case 5: |
| 61 | fuzz_nice_float(fuzz, &a, &b, &c, &d, &e); |
| 62 | path->arcTo(a, b, c, d, e); |
| 63 | break; |
| 64 | case 6: |
| 65 | path->close(); |
| 66 | break; |
| 67 | default: |
Kevin Lubick | 54f20e0 | 2018-01-11 14:50:21 -0500 | [diff] [blame] | 68 | SkASSERT(false); |
Kevin Lubick | 2541edf | 2018-01-11 10:27:14 -0500 | [diff] [blame] | 69 | break; |
| 70 | } |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | template <> |
| 75 | inline void Fuzz::next(SkRegion* region) { |
| 76 | uint8_t N; |
| 77 | this->nextRange(&N, 0, 10); |
| 78 | for (uint8_t i = 0; i < N; ++i) { |
| 79 | SkIRect r; |
| 80 | uint8_t op; |
| 81 | this->next(&r); |
| 82 | r.sort(); |
| 83 | this->nextRange(&op, 0, (uint8_t)SkRegion::kLastOp); |
| 84 | if (!region->op(r, (SkRegion::Op)op)) { |
| 85 | return; |
| 86 | } |
| 87 | } |
| 88 | } |